Analysis
- max time kernel
149s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
09/12/2024, 04:25
General
- Target qua1copy.exe
- Size 3.1MB
- Sample241209-e1zebazkc1
- SHA256 1802c12195920564b376da69515b15bd80800b4f5e4c78fd7eb7ddc16eb4c16f
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
45.66.231.154:4782
-
4304b988-116c-4522-ab83-7f9ad875f60f
-
encryption_key
A6B8B9B9B02FC86103A59CE003D7B3B45DAF8550
-
install_name
svchost.exe
-
log_directory
svchost
-
reconnect_delay
3000
-
startup_key
svchost
-
subdirectory
svchost
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar family
- Quasar payload 2 IoCs
- Executes dropped EXE 1 IoCs
- Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
-
C:\Users\Admin\AppData\Local\Temp\qua1copy.exe"C:\Users\Admin\AppData\Local\Temp\qua1copy.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "svchost" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\svchost\svchost.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
-
-
C:\Users\Admin\AppData\Roaming\svchost\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost\svchost.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "svchost" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\svchost\svchost.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
svchost.exe
memory/4808-10-0x00007FFBC2930000-0x00007FFBC33F1000-memory.dmp
memory/4808-11-0x000000001CD50000-0x000000001CDA0000-memory.dmp
memory/4808-12-0x000000001CE60000-0x000000001CF12000-memory.dmp
memory/4808-13-0x00007FFBC2930000-0x00007FFBC33F1000-memory.dmp
memory/4936-0-0x00007FFBC2933000-0x00007FFBC2935000-memory.dmp
memory/4936-1-0x0000000000830000-0x0000000000B54000-memory.dmp
memory/4936-2-0x00007FFBC2930000-0x00007FFBC33F1000-memory.dmp
memory/4936-9-0x00007FFBC2930000-0x00007FFBC33F1000-memory.dmp